臥式混流泵安裝A靈壽臥式混流泵安裝A不生銹臥式混流泵安裝
2,振蕩頻率為0~40%作業(yè)轉(zhuǎn)速。過大的軸承空隙,軸瓦松動,油內(nèi)有雜質(zhì),油質(zhì)(粘度,溫度)不良,因空氣或技術(shù)液體使軸起泡,光滑不良,軸承損壞。處理辦法:查看后,采納相應(yīng)措施,如調(diào)整軸承空隙,鏟除油中雜質(zhì),替換新油。
*技術(shù)參數(shù)
(2)改變轉(zhuǎn)速的方法:改變皮帶輪外徑或改變齒輪減速器傳動比,也可選用不同轉(zhuǎn)速的動力機(jī)。
(3)水泵轉(zhuǎn)速改變后,其流量(Q)、揚(yáng)程(H)和功率(N)的變化關(guān)系如下式所示: Q1=Q*n1/n H1=H*(n1/n)2 N1=N*(n1/n)3
式中:Q1、H1、N.分別代表轉(zhuǎn)速改變后的流量、揚(yáng)程和功率。 Q、H、N分別代表規(guī)定轉(zhuǎn)速下的流量、揚(yáng)程和功率。
(4)水泵轉(zhuǎn)速提高后,耗用功率增加,吸上真空度降低,壽命縮短。過分提高轉(zhuǎn)速會發(fā)生其它事故,故應(yīng)慎用。
(5)水泵轉(zhuǎn)速過分降低時(shí),泵的使用效益低,為此,應(yīng)盡量避免泵在過低轉(zhuǎn)速下運(yùn)行。用戶應(yīng)按性能曲線圖選擇使用。
臥式混流泵安裝A靈壽臥式混流泵安裝A不生銹臥式混流泵安裝
混流泵的安裝原則及注意點(diǎn): 1, 安裝原則: (1),水泵的安裝高度:上水位不應(yīng)高于軸承下端,下水位取決于泵的允許吸上真空度(應(yīng)減去管路損失)。 (2),水泵應(yīng)盡可能靠近水源,以縮短進(jìn)水管路,減少管路損失。 (3),管路應(yīng)盡量直和短。一般在進(jìn)水口用一只90°或33°彎管,水泵底腳基礎(chǔ)斜澆,可省去出水彎管。
2、允許吸上真空度[Hs]與必需汽蝕余量[NPSH]r的換算關(guān)系:
[Hs]≈10-[HPSH]c
[NPSH]r≈[NPSH]C+0.3
式中:[Hs]-允許吸上真空度 米
[NPSH]C-臨界汽蝕余量 米
[NPSH]r-必需汽蝕余量 米
臥式混流泵安裝A靈壽臥式混流泵安裝A不生銹臥式混流泵安裝
S型雙吸中開泵多見13大毛病:泵不能發(fā)動或發(fā)動負(fù)荷大,泵不排液,泵排液后中止,流量缺乏,揚(yáng)程不行,運(yùn)轉(zhuǎn)中功耗大,泵振蕩或有反常動靜,軸承發(fā)熱,軸封發(fā)熱,轉(zhuǎn)子竄動大,發(fā)生水擊一,泵不能發(fā)動或發(fā)動負(fù)荷大要素及處理辦法如下。
*特征描述
HW 型蝸殼式混流泵是按國家標(biāo)準(zhǔn)系列而設(shè)計(jì)的高節(jié)能產(chǎn)品。其性能指標(biāo)均達(dá)到先進(jìn)水平,省材節(jié)能效果顯著。延伸搜索:水環(huán)真空泵
(一)用途
HW型混流泵為臥式、單級、單吸、懸臂蝸殼式混流泵,適用于農(nóng)田排灌、工業(yè)、城鎮(zhèn)給排水及船塢、碼頭引水等。延伸搜索:水環(huán)真空泵
(二)特點(diǎn)
體積小、重量輕、流量大、效率高,汽蝕性能好,區(qū)范圍寬廣而平坦,結(jié)構(gòu)簡單,使用管理方法,維修容易。延伸搜索:水環(huán)真空泵
(三)型號說明
以250HW—8為例:
250—泵進(jìn)(出)水口直徑為250毫米。
8—泵總揚(yáng)長為8米。
(四)水泵的傳動方式
我廠生產(chǎn)的HW型系列混流泵均機(jī)(電)兩用,其轉(zhuǎn)動方式視各地區(qū)動力情況而定,訂貨時(shí)根據(jù)原動機(jī)的型號(功率、轉(zhuǎn)速)確定水泵的傳動方式,以定皮帶輪的大小或聯(lián)軸器的規(guī)格。延伸搜索:水環(huán)真空泵
(五)水泵轉(zhuǎn)向:
從水泵進(jìn)水口看葉輪為逆時(shí)針方向旋轉(zhuǎn)(即箭頭所示的方向旋轉(zhuǎn))。
臥式混流泵安裝A靈壽臥式混流泵安裝A不生銹臥式混流泵安裝
出口直徑mmhw——臥式渦殼混流泵8——設(shè)計(jì)揚(yáng)程,ms——變形代號hw混流泵水泵利益:結(jié)構(gòu)簡單,使用靠得住,裝修便利,而且效率高,體型小,重量輕。軸承采用油脂潤滑,改換不必拆轉(zhuǎn)子體,采用可上拆結(jié)構(gòu)。(四)出水管安裝:水泵安裝完畢后,即可將出口錐管與泵體聯(lián)接好,然后可安裝其它出水管路,閥門等。外形安裝圖產(chǎn)物外形安裝見附圖安裝和運(yùn)行產(chǎn)物安裝前應(yīng)搜檢泵房尺寸,泵基本是否合適要求,搜檢水泵機(jī)組部件是否齊全。5~22mhw混流泵聲名:100—hw—8—s100——泵進(jìn)軸承磨損或損壞。檢修臥式混流泵的幾個(gè)經(jīng)驗(yàn)出水管一般為鐵管,貼地面伸出室外。800hlz-9a流量q為5000-8000m3/h,揚(yáng)程h為。
Instructions for use (i) the HW mixed-flow pump is composed of main parts such as pump body, pump cover, impeller, pump shaft and bearing body. (Ii) The pump cover is a part of the pump connected to the inlet pipe, with a specified axial end gap between the end surface and the impeller (maintaining the specified axial bance after eliminating the axial activity gap of the bearing). The gap is too small to produce friction, too large will lead to the pump pressure water reflux, so that the pump efficiency is reduced, through the increase or decrease adjustment paper pad to meet the required requirements of the gap. Extended search: Water ring Vacuum Pump (iii) The sealing device is composed of a filler letter, a water seal letter, a filler cover and a lead powder (or oil immersion) asbestos root. Its role is: 1, in the tea to prevent air inhalation pump, play a sealing role. 2. When pumping, prevent water from flowing out of the pump too much along the shaft. (Iv) Shaft application to protect the shaft does not make it directly friction with the filler, if long-term use found that the bushing wear too much, can change the bushing. (V) The two supports of the pump shaft are bearings in the bearing body, and the bearing has an appropriate amount of grease in its body to lubricate the bearings. (Vi) The baffle on the shaft prevents water from flowing into the bearing body along the pump, thus protecting the bearing and extending its service life.
采用流線迭代法求解軸面流動.流線迭代法基于沿任意準(zhǔn)正交線的軸面速度梯度方程和流體運(yùn)動的連續(xù)方程,根據(jù)各子流道流量相等的原則,迭代求解沿準(zhǔn)正交線的軸面速度梯度方程即可得到軸面流網(wǎng).通過流線迭代法,在確定軸面流道輪廓之后,可以通過所需時(shí)間很短的迭代計(jì)算過程得到的軸面流網(wǎng).圖1是流網(wǎng)所對應(yīng)的軸面速度沿軸面流線的分布圖.